export const GetQueryString = name => { 
    var reg = new RegExp("(^|&)" + name + "=([^&]*)(&|$)", "i"); 
    var r = window.location.search.substr(1).match(reg); 
    var context = ""; 
    if (r != null) 
    context = r[2]; 
    reg = null; 
    r = null; 
    return context == null || context == "" || context == "undefined" ? "" : context; 
}
